p0300, p0301, p0302
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Cadillac STS Forum - 2005 through 2012 Discussion, p0300, p0301, p0302 in Past Cadillac Vehicle Discussion; hi ! I have a 2006 STS since a couple months and I have problems.. sometimes when I want to ...
  1. #1
    emmanlap is offline Cadillac Owners Member
    Join Date
    Nov 2013
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    hi !

    I have a 2006 STS since a couple months and I have problems..
    sometimes when I want to start the engine it doesnt start.. it seem to do it only when its hot or the engine is hot.. a friend plug the computer on it and the code p0300, p0301(cyl.1) and p0302(cyl.2) came out.. i change the sparks plugs and did a injector traitment.. someone talked about the coil.. he said if we inverse it we can see if the code swith cylinder... someone else tell me that it cant be this cause if it was this the problem would be all the time..... we erased the code and the problem is still there but the code didnt came back...
    ohhh yeah I have another problem ti.. I dont know if its reliated..
    sometimes when a drive I push on the gaz pedal and the car wont move.. the 'traction assertie activer' advise come on de dash.. when I push on the traction control button its ok.. ??

    thank you in advance.
    and sorry if there is some mistake I speak french!!

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  3. #2
    mkosharkii's Avatar
    mkosharkii is offline Cadillac Owners Member
    Automobile(s): 2007 Escalade, 2005 STS4
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    Re: p0300, p0301, p0302

    The coils are a good place to check. I would switch your cylinder 1 and 2 coils with cylinders 3 and 4. Have your friend clear the codes, and scan again when the codes reappear. You may only have a P0300 atfirst, just give time for the individual cylinders to throw a code.

  4. #3
    mjcaddy's Avatar
    mjcaddy is offline Cadillac Owners Fanatic
    Automobile(s): 09 1SG STS4, 05 V6 SRX4 (retired 03 DeVille)
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    Re: p0300, p0301, p0302

    the traction control message appear because your car think it is slipping, you'll need to go to a place with more advance scanners, not sure if you are in france or canada, but igf you are in canada then auto parts shops can scan these for free, not sure about france, you might need to go to a dealer,
    about the missfire do as mkosharkii suggested and switch the coils, if it changed then it's the coils fault, if you still get the same codes then you probably have a bad ECM

  5. #4
    emmanlap is offline Cadillac Owners Member
    Join Date
    Nov 2013
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    Thank you i'll try this and give you news!

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